{
  "collection_id": {
    "type": "collection-id",
    "title": "Collection",
    "required": true,
    "default": 2
  },
  "activity": {
    "type": "activity-type",
    "title": "Activity type",
    "enums": ["stars", "pull-requests", "pull-request-creators", "issues"],
    "default": "stars"
  }
}